WebRequestEvent Class
Definition
Important
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Defines the base class for events providing Web-request information.
public ref class WebRequestEvent : System::Web::Management::WebManagementEventpublic class WebRequestEvent : System.Web.Management.WebManagementEventtype WebRequestEvent = class
inherit WebManagementEventPublic Class WebRequestEvent
Inherits WebManagementEvent- Inheritance
Examples
The following code example shows how to derive from the WebRequestEvent class to create a custom event.
using System;
using System.Text;
using System.Web;
using System.Web.Management;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace SamplesAspNet
{
// Implements a custom WebRequestEvent.
public class SampleWebRequestEvent :
System.Web.Management.WebRequestEvent
{
private string customCreatedMsg,
customRaisedMsg;
// Invoked in case of events identified only
// by their event code.
public SampleWebRequestEvent(
string msg,
object eventSource, int eventCode):
base(msg, eventSource, eventCode)
{
// Perform custom initialization.
customCreatedMsg =
string.Format(
"Event created at: {0}",
EventTime.ToString());
}
// Invoked in case of events identified
// by their event code.and
// related event detailed code.
public SampleWebRequestEvent(string msg,
object eventSource, int eventCode,
int eventDetailCode):
base(msg, eventSource, eventCode,
eventDetailCode)
{
// Perform custom initialization.
customCreatedMsg =
string.Format(
"Event created at: {0}",
EventTime.ToString());
}
// Raises the SampleWebRequestEvent.
public override void Raise()
{
// Perform custom processing.
customRaisedMsg =
string.Format(
"Event raised at: {0}",
EventTime.ToString());
// Raise the event.
base.Raise();
}
//Formats Web request event information.
public override void FormatCustomEventDetails(
WebEventFormatter formatter)
{
// Add custom data.
formatter.AppendLine("");
formatter.IndentationLevel += 1;
formatter.AppendLine(
"* Custom Request Information Start *");
//// Display custom event timing.
formatter.AppendLine(customCreatedMsg);
formatter.AppendLine(customRaisedMsg);
formatter.AppendLine(
"* Custom Request Information End *");
formatter.IndentationLevel -= 1;
}
}
}
Imports System.Text
Imports System.Web
Imports System.Web.Management
Imports System.Web.UI
Imports System.Web.UI.WebControls
' Implements a custom WebRequestEvent.
Public Class SampleWebRequestEvent
Inherits System.Web.Management.WebRequestEvent
Private customCreatedMsg, customRaisedMsg As String
' Invoked in case of events identified only
' by their event code.
Public Sub New(ByVal msg As String, _
ByVal eventSource As Object, _
ByVal eventCode As Integer)
MyBase.New(msg, eventSource, eventCode)
' Perform custom initialization.
customCreatedMsg = String.Format( _
"Event created at: {0}", _
EventTime.ToString())
End Sub
' Invoked in case of events identified
' by their event code.and
' related event detailed code.
Public Sub New(ByVal msg As String, _
ByVal eventSource As Object, _
ByVal eventCode As Integer, _
ByVal eventDetailCode As Integer)
MyBase.New(msg, eventSource, _
eventCode, eventDetailCode)
' Perform custom initialization.
customCreatedMsg = String.Format( _
"Event created at: {0}", _
EventTime.ToString())
End Sub
' Raises the SampleWebRequestEvent.
Public Overrides Sub Raise()
' Perform custom processing.
customRaisedMsg = String.Format( _
"Event raised at: {0}", _
EventTime.ToString())
' Raise the event.
MyBase.Raise()
End Sub
'Formats Web request event information.
Public Overrides Sub FormatCustomEventDetails( _
ByVal formatter As WebEventFormatter)
' Add custom data.
formatter.AppendLine("")
formatter.IndentationLevel += 1
formatter.AppendLine( _
"* Custom Request Information Start *")
'// Display custom event timing.
formatter.AppendLine(customCreatedMsg)
formatter.AppendLine(customRaisedMsg)
formatter.AppendLine( _
"* Custom Request Information End *")
formatter.IndentationLevel -= 1
End Sub
End Class
The following is an excerpt of the configuration file that enables ASP.NET to use the custom event.
<healthMonitoring
enabled="true" heartBeatInterval="0">
<providers>
<!-- Define the custom provider that
processes custom Web request events. -->
<add name="SampleWebEventProvider"
type="SamplesAspNet.SampleEventProvider,webeventprovider,Version=1.0.1573.18094, Culture=neutral, PublicKeyToken=b5a57a9a9d487cf4, processorArchitecture=MSIL"/>
</providers>
<eventMappings>
<!-- Define the event source that
issues custom events. -->
<add name="SampleWebRequestEvent"
type="SamplesAspNet.SampleWebRequestEvent,webrequestevent,Version=1.0.1573.23947, Culture=neutral, PublicKeyToken=e717d983a78c8ddb, processorArchitecture=MSIL"/>
</eventMappings>
<rules>
<!-- Associate custom event with
related custom provider -->
<add
name="CustomWebRequestEvent"
eventName="SampleWebRequestEvent"
provider="SampleWebEventProvider"
profile="Critical"/>
</rules>
</healthMonitoring>
Remarks
The WebRequestEvent is raised at every Web request.
It uses the WebRequestInformation class to obtain request information.
Note
In most cases you will use the standard ASP.NET health-monitoring types and control their behavior by setting the healthMonitoring configuration section. You can also create custom types, as shown in the next example. If you create your custom event type and you need to add your own information, customize the FormatCustomEventDetails method. This will avoid overwriting or tampering with sensitive system information.
Constructors
| WebRequestEvent(String, Object, Int32) |
Initializes the WebRequestEvent class with specified event parameters. |
| WebRequestEvent(String, Object, Int32, Int32) |
Initializes the WebRequestEvent class with specified event parameters. |
Properties
| EventCode |
Gets the code value associated with the event. (Inherited from WebBaseEvent) |
| EventDetailCode |
Gets the event detail code. (Inherited from WebBaseEvent) |
| EventID |
Gets the identifier associated with the event. (Inherited from WebBaseEvent) |
| EventOccurrence |
Gets a counter that represents the number of times the event has occurred. (Inherited from WebBaseEvent) |
| EventSequence |
Gets the number of times the event has been raised by the application. (Inherited from WebBaseEvent) |
| EventSource |
Gets the object that raises the event. (Inherited from WebBaseEvent) |
| EventTime |
Gets the time when the event was raised. (Inherited from WebBaseEvent) |
| EventTimeUtc |
Gets the time when the event was raised. (Inherited from WebBaseEvent) |
| Message |
Gets the message that describes the event. (Inherited from WebBaseEvent) |
| ProcessInformation |
Gets information about the ASP.NET application-hosting process. (Inherited from WebManagementEvent) |
| RequestInformation |
Gets the information associated with the Web-application request. |
Methods
| Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
| FormatCustomEventDetails(WebEventFormatter) |
Provides standard formatting of the event information. (Inherited from WebBaseEvent) |
| GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
| GetType() |
Gets the Type of the current instance. (Inherited from Object) |
| IncrementPerfCounters() |
Used internally to increment the performance counters. |
| MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
| Raise() |
Raises an event by notifying any configured provider that the event has occurred. (Inherited from WebBaseEvent) |
| ToString() |
Formats event information for display purposes. (Inherited from WebBaseEvent) |
| ToString(Boolean, Boolean) |
Formats event information for display purposes. (Inherited from WebBaseEvent) |
